Nortel BCM50 Installation And Maintenance Manual page 219

Table 44 GATM8 RJ-21 connector wiring (Sheet 2 of 2)
Line Pin Connection
40 No connection
—
15 No connection
. .
. .
. .
49 No connection
—
24 No connection
Aux 50 Tip
(see
25 Ring
Note)
Note: The AUX port supports full data speeds. When the line is in use by an analog device, the icon is lit on the
phone to indicate it is in use. If you try to seize the line using the phone the display shows "in use". Also, in the
event of a power failure an analog set on line 1 goes active (powered by the CO).
Wire color
Black-Slate
Slate-Black
. .
. .
. .
Violet-Brown
Brown-Violet
Violet-Slate
Slate-Violet
Appendix G GATM wiring chart
Default line numbers on
Expansion port 1
—
.
.
.
—
—
BCM50 Installation and Maintenance Guide
Default line numbers on
Expansion port 2
—
.
.
.
—
—
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